class_docstr: Tests for the qml.simplify method used with callables.
class_docstr_tok: ["Tests","for","the","qml.simplify","method","used","with","callables","."]
docstr: Test the simplify method with a qfunc.
docstr_tok: ["Test","the","simplify","method","with","a","qfunc","."]
code: def test_simplify_qfunc(self):
      """Test the simplify method with a qfunc."""
      dev = qml.device("default.qubit", wires=2)
  
      def qfunc():
          qml.prod(
              qml.prod(qml.PauliX(0) ** 1, qml.PauliX(0)), qml.PauliZ(1)
          )
          return qml.probs(wires=0)
  
      simplified_tape_op = qml.PauliZ(1)
  
      s_qfunc = qml.simplify(qfunc)
  
      qnode = qml.QNode(qfunc, dev)
      s_qnode = qml.QNode(s_qfunc, dev)
  
      assert (s_qnode() == qnode()).all()
      assert len(s_qnode.tape) == 2
      s_op = s_qnode.tape.operations[0]
      assert isinstance(s_op, qml.PauliZ)
      assert s_op.data == simplified_tape_op.data
      assert s_op.wires == simplified_tape_op.wires
      assert (
          s_op.arithmetic_depth == simplified_tape_op.arithmetic_depth
      )
  
file_path: pennylane/tests/ops/functions/test_simplify.py
imports: import pytest
  import pennylane
  from pennylane import numpy
  from pennylane.tape import QuantumScript
label_desc: Use image node_id 1 for calling the TestSimplifyCallables obj's underlying member method code with example usage: obj.test_simplify_qfunc() and returns: qml